Abstract
Objective To investigate the main risk factors and protective factors of malignant tumors in Taian City. Methods Esophagus, lung, stomach, liver Malignancies in Taian City, 1:1 matched case-control study, application conditions of the relevant factors, logistic regression univariate and multivariate analysis were done. Results For esophageal and gastric cancer, the common risk factors were eating hot, dry,hard, deep fried foods, and also animal food, heavy drinking, family history of cancer, the staple food pancake with esophageal cancer-related. For lung cancer, heavy smokers, living in and around the sources of pollution,may increase the probability of illness, hepatitis B virus infection, chronic liver disease history, unstable emotion, eating and drinking are the major risk factors for liver cancer. Tea on the four kinds of malignant tumors often have a protective effect. Raw garlic, fruits and vegetables, dairy soy foods can prevent esophageal cancer and gastric cancer. Conclusion To promote proper exercise, stop and smoking alcohol drinking,psychological balance, good dietary habits, can effectively prevent the occurrence of malignant tumors. Key words: Cancer; Case-control studies; Risk factors
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